Andonov, V., Tcholakova, E., Ananoshtev, N., Stanchev, I., & Djurkov, V. (1999). Diagnostic strategies for evaluation and prognosticating the outcome of jaundice among patients with cholestasis caused by neoplastic diseases of the hepatobiliary system and the pancreas. Folia Medica, 41 (1), 72-74.